i've heard a lot of people talking about compatibility with "older" players.
i'm NEVER going to buy an "older" player in the future. If the one i have now plays them fine, then that's good enough.
each successive dvd player that comes out in the next years will be more forgiving on dvd mistakes. so any "future" players i buy are going to be even more forgiving than the one i currently own.
and if i go to a friends house that has an "older" player that won't play my discs...then he won't be my friend anymore. that's the way i'll pick future friends.